Quartzsea Acquisition Corp - QSEA

Detailed investor-level table based on 13F positions.

Shareholders (13F)

Quarter: Q4 2025 · Compare: Q3 2025
13D/13G major owners: Ownership tab.
Methodology: Market value and % of portfolio use SEC reported VALUE ($000). For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received. Details.
Rows: 0
Investor History Status Shares held Market value ($000) % of portfolio Previous % Rank Change in shares % change in shares Source Date reported
Karpus Management, Inc. History Reduced 2,263,880 23,159 0.71% 0.73% 1 -12,500 -0.55% Q4 2025 Feb 17, 2026
MIZUHO SECURITIES USA LLC History Added to 676,753 6,835 0.11% 0.13% 2 +34,976 5.45% Q4 2025 Feb 09, 2026
WOLVERINE ASSET MANAGEMENT LLC History Added to 602,513 6,163 0.05% 0.04% 3 +18,008 3.08% Q4 2025 Feb 02, 2026
RIVERNORTH CAPITAL MANAGEMENT, LLC History Reduced 499,756 5,112 0.24% 0.29% 4 -116 -0.02% Q4 2025 Feb 17, 2026
MANGROVE PARTNERS IM, LLC History No change 408,154 4,175 0.34% 0.31% 5 0 0.0% Q4 2025 Feb 17, 2026
AQR Arbitrage LLC History No change 369,960 3,792 0.08% 0.1% 6 0 0.0% Q4 2025 Feb 17, 2026
Westchester Capital Management, LLC History No change 366,605 3,757 0.16% 0.17% 7 0 0.0% Q4 2025 Feb 13, 2026
Polar Asset Management Partners Inc. History New 350,000 3,580 0.05% 8 +350,000 New Q4 2025 Feb 17, 2026
BERKLEY W R CORP History Added to 317,686 3,249 0.15% 0.17% 9 +29,083 10.08% Q4 2025 Feb 13, 2026
TORONTO DOMINION BANK History Reduced 241,975 2,475 0.0% 0.0% 10 -25,000 -9.36% Q4 2025 Feb 17, 2026
Clear Street Group Inc. History No change 181,159 1,884 0.01% 0.01% 11 0 0.0% Q4 2025 Feb 13, 2026
Shaolin Capital Management LLC History Added to 176,586 1,806 0.06% 0.08% 12 +1,586 0.91% Q4 2025 Feb 17, 2026
LINDEN ADVISORS LP History No change 175,000 1,793 0.01% 0.01% 13 0 0.0% Q4 2025 Feb 17, 2026
Hudson Bay Capital Management LP History No change 175,000 1,793 0.01% 0.01% 14 0 0.0% Q4 2025 Feb 13, 2026
D. E. Shaw & Co., Inc. History No change 170,012 1,742 0.0% 0.0% 15 0 0.0% Q4 2025 Feb 17, 2026
GLAZER CAPITAL, LLC History Reduced 149,926 1,534 0.04% 0.06% 16 -13,827 -8.44% Q4 2025 Feb 13, 2026
GOLDMAN SACHS GROUP INC History No change 119,661 1,224 0.0% 0.0% 17 0 0.0% Q4 2025 Mar 25, 2026
TWO SIGMA INVESTMENTS, LP History Reduced 85,270 872 0.0% 0.0% 18 -98,858 -53.69% Q4 2025 Feb 17, 2026
Dakota Wealth Management History No change 69,500 710 0.01% 0.01% 19 0 0.0% Q4 2025 Jan 13, 2026
Logan Stone Capital, LLC History No change 50,053 512 0.13% 0.23% 20 0 0.0% Q4 2025 Feb 17, 2026
Radcliffe Capital Management, L.P. History No change 26,553 271 0.01% 0.02% 21 0 0.0% Q4 2025 Feb 17, 2026
Warberg Asset Management LLC History No change 24,000 245 0.03% 0.04% 22 0 0.0% Q4 2025 Feb 13, 2026
Wellspring Financial Advisors, LLC History No change 17,700 181 0.01% 0.02% 23 0 0.0% Q4 2025 Feb 11, 2026
Crossingbridge Advisors, LLC History No change 140,189 140 0.04% 0.07% 24 0 0.0% Q4 2025 Feb 13, 2026
UBS Group AG History No change 2,000 20 0.0% 0.0% 25 0 0.0% Q4 2025 Jan 29, 2026
MORGAN STANLEY History Added to 38 0 +7 22.58% Q4 2025 Feb 13, 2026